Piezoelectric Machines: Achieving Non-Standard Actuation and Sensing Properties in Poled Ceramics

Author:

Saccomandi Giuseppe1,Speranzini Emanuela1,Zurlo Giuseppe2

Affiliation:

1. Dipartimento di Ingegneria, Universitá degli studi di Perugia, 06125 Perugia, Italy

2. School of Mathematics, Statistics and Applied Mathematics, National University of Ireland, Galway, University Road Galway, Ireland

Abstract

Summary In the framework of linear piezoelectric ceramics, we study the deformations of a circular infinite hollow cylinder, subjected to a potential difference between the inner and outer surfaces. When the poling direction is perfectly aligned with the cylinder axis, the solution to this problem is a trivial axisymmetric anti-plane state. However, when the poling direction has an offset angle with respect to the cylinder axis, the corresponding behavior becomes more complex, with the anti-plane state coupled to an in-plane, potentially non axisymmetric, deformation. In this work, we show that this structural coupling, due to the poling direction, can be fruitfully exploited to achieve non-standard actuation and sensing properties, like the possibility to generate a torque under axially symmetric electromechanical controls.

Funder

GNFM of INDAM

Publisher

Oxford University Press (OUP)

Subject

Applied Mathematics,Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics

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